Epoxy composite material explosion-proof shell forming system

Abstract

The utility model relates to the technical field of composite material processing equipment, and discloses an epoxy composite material explosion-proof shell forming system which comprises a mold unit and a feeding unit, the mold unit comprises a cavity mold and a core mold which can move relative to the cavity mold and is matched with the cavity mold, and heating plates are arranged at the bottom of the cavity mold and the bottom of the core mold. The feeding unit comprises a resin A component storage tank, a resin B component storage tank and a mixer, the resin A component storage tank and the resin B component storage tank are both communicated with the mixer, and a feeding pipe is communicated between the mixer and the cavity mold. The explosion-proof shell forming system solves the problem that an explosion-proof shell forming system in the prior art cannot meet the processing requirement of a new process.

Description

Technical Field

[0001] The utility model relates to the technical field of composite material processing equipment, in particular to an epoxy composite material flameproof housing molding system. Background Art

[0002] Flameproof electrical equipment can be divided into flameproof type, increased safety type, intrinsic safety type, positive pressure type, oil-immersed type, sand-filled type, etc. The key to flameproof equipment is that it has a special "flameproof shell" that can not only withstand the explosion pressure generated by the detonation of the explosive gas mixture inside it, but also prevent the explosive from passing through the flameproof gap to ignite the explosive mixture around the shell. It is widely used in places with gas and coal dust explosion hazards, and its safety performance is directly related to the safety of life and property of employees. Currently, the commonly used metal flameproof equipment is heavy, resulting in high power consumption of sports equipment equipped with metal flameproof shells; and due to the large inertia, the equipment has poor control performance; it is not conducive to energy conservation, emission reduction and safe production in coal mines; and metal flameproof equipment is not corrosion-resistant, and there may be problems such as welding gaps, rust spots on the flameproof joint surface, mechanical damage and pits, which lead to poor flameproof effect or even failure.

[0003] In response to the above technical problems, the inventor team has conducted comprehensive optimization of the material composition and molding process of the flameproof enclosure after years of intensive research and development. In the optimization stage of the material composition, the resin material is optimized to a mixed resin of resin component A and resin component B, and the mixed materials are injected during use. However, the existing flameproof enclosure molding system is mostly a single resin storage tank structure, which cannot meet the processing requirements of the new process. Therefore, this solution aims to develop supporting processing equipment for the new molding process. Utility Model Content

[0004] The utility model aims to provide an epoxy composite flameproof shell molding system to solve the problem that the flameproof shell molding system in the prior art cannot meet the processing requirements of the new process.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an epoxy composite flameproof housing molding system, comprising a mold unit and a feeding unit, the mold unit comprising a cavity mold and a core mold which can move relative to the cavity mold and cooperate with the cavity mold, the bottom of the cavity mold and the bottom of the core mold are both provided with heating plates, the feeding unit comprises a resin A component storage tank, a resin B component storage tank and a mixer, the resin A component storage tank and the resin B component storage tank are both connected to the mixer, and a feeding pipe is connected between the mixer and the cavity mold.

[0006] The principle and advantages of this solution are: in actual application, the inventor optimizes the molding materials and molding process of the flameproof enclosure in view of the problems in the prior art that the metal flameproof enclosure equipment is heavy and the metal flameproof equipment is not corrosion-resistant (it is easy to have welding gaps, rust spots on the flameproof joint surface, mechanical damage and pits, etc., which affect the flameproof performance). The molding material is preferably a mixed resin of resin component A and resin component B, and a metal reinforcement layer is placed outside after molding. In view of the above new process, in order to solve the problem of matching degree of molding equipment, a matching molding system is developed in a targeted manner. In this technical solution, a resin component A storage tank, a resin component B storage tank and a mixer are set. When the flameproof enclosure is molded, the resin component A and the resin component B are mixed by the mixer and then enter the mold unit composed of the cavity mold and the core mold for heating and molding. The resin components are prepared on the spot, avoiding excessive reactions between the components that are pre-mixed and ready for use, ensuring the stability of the performance of the resin material, and then ensuring the flameproof performance of the flameproof enclosure. In addition, it should be noted that, in addition to epoxy resin, the resin material of the present technical solution can also be selected as polyurethane or unsaturated resin, which can also achieve the effect of reducing weight while taking into account mechanical properties.

[0007] Preferably, as an improvement, the top of the core mold is connected to a hydraulic cylinder, and the hydraulic plunger of the hydraulic cylinder is fixed to the top of the core mold.

[0008] In this technical solution, a hydraulic cylinder is used to drive the core mold to move, which can ensure the stability of the driving force.

[0009] Preferably, as an improvement, a pipeline A is connected between the resin A component storage tank and the mixer, and a pipeline B is connected between the resin B component storage tank and the mixer.

[0010] In this technical solution, the resin A component and the resin B component are fed through pipeline A and pipeline B respectively, and the structural design is reasonable.

[0011] Preferably, as an improvement, pipeline A is provided with a metering pump for resin A component, and pipeline B is provided with a metering pump for resin B component.

[0012] In this technical solution, by respectively arranging metering pumps on pipelines A and B, quantitative feeding can be performed according to the compatibility requirements of resin component A and resin component B, thereby improving the accuracy of feeding and eliminating the need for additional manual input.

[0013] Preferably, as an improvement, the mixer is connected to a cleaning pipe, and one end of the cleaning pipe away from the mixer is connected to a cleaning liquid storage tank.

[0014] In the technical solution, the cleaning tube is used to clean the mixer to ensure the crystallinity of the mixer, thereby ensuring the accuracy of the mixing of the resin A and B components when it is used again later.

[0015] Preferably, as an improvement, the cavity mold is connected to a cooling unit, the cooling unit includes a cooling tank, and a cooling pipe and a reflux pipe are respectively connected between the cooling tank and the cavity mold.

[0016] In the present technical solution, the cooling unit is used to cool and solidify the flameproof enclosure that has been heated and formed. Compared with traditional natural cooling, the use of coolant can improve the processing efficiency of the equipment.

[0017] Preferably, as an improvement, the cavity mold is also connected to a recovery unit for recovering waste mixed resin.

[0018] In the technical solution, the setting of the recovery unit can realize the unified recovery of waste mixed resin on the one hand, and can realize timely recovery on the other hand, so as to avoid the mixed resin being retained in the mixer for a long time and causing equipment blockage.

[0019] Preferably, as an improvement, the recovery unit comprises a resin collector, a recovery pipe is connected between the resin collector and the cavity mold, and the resin collector is connected to a vacuum pump.

[0020] In this technical solution, when recycling waste mixed resin, it is only necessary to turn on the vacuum pump to recycle the mixed resin with a certain viscosity from the recovery tank into the resin collector. The structural design is reasonable and the operation is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the composite flameproof housing molding system of the utility model.

[0022] Figure 2 It is a schematic diagram of the structure of the fiber ply in the embodiment of the utility model. DETAILED DESCRIPTION

[0023] The following is further described in detail through specific implementations, but the implementation of the utility model is not limited thereto. Unless otherwise specified, the technical means used in the following implementations are conventional means well known to those skilled in the art; the experimental methods used are all conventional methods; the materials, reagents, etc. used can all be obtained from commercial channels.

[0024] The figure marks in the drawings of the specification include: vacuum pump 1, resin collector 2, waste mixed resin 3, cavity mold 4, core mold 5, hydraulic plunger 6, fiber ply 7, second heating plate 8, first heating plate 9, waste cleaning liquid storage tank 10, mixer 11, resin A component metering pump 12, resin A component storage tank 13, cleaning liquid extraction pump 14, resin B component metering pump 15, cleaning liquid storage tank 16, resin B component storage tank 17, cooling unit 18.

[0025] The embodiment is basically as shown in the attached Figure 1Shown: An epoxy composite flameproof enclosure molding system includes a mold unit, a feeding unit, a recovery unit and a cooling unit.

[0026] The mold unit includes a frame, a first heating plate 9 is installed above the frame, a cavity mold 4 is fixed on the top of the first heating plate 9, and the cavity mold 4 is used to accommodate the fiber layer 7 and the mixed resin solution (a mixed solution of resin component A and resin component B). A core mold 5 is arranged above the cavity mold 4 to match it, and a lifting component for driving the core mold 5 to rise and fall is arranged between the core mold 5 and the frame. The lifting component in this embodiment is a hydraulic cylinder, and a second heating plate 8 is fixed between the hydraulic plunger 6 of the hydraulic cylinder and the core mold 5.

[0027] The feeding unit is used for feeding the resin solution, and the feeding unit includes a resin A component storage tank 13, a resin B component storage tank 17 and a mixer 11. A pipeline A is connected between the resin A component storage tank 13 and the mixer 11, and a pipeline B is connected between the resin B component storage tank 17 and the mixer 11. A resin A component metering pump 12 is provided on the pipeline A, and a resin B component metering pump 15 is provided on the pipeline B. A feeding pipe is connected between the mixer 11 and the cavity mold 4, and a feeding pump is provided on the feeding pipe. The mixer 11 is also connected to a cleaning pipe, and the end of the cleaning pipe away from the mixer 11 is connected to a cleaning liquid storage tank 16, and a cleaning liquid feed pump 14 is installed on the cleaning pipe. The feed pipe is connected to a waste liquid pipe, and the end of the waste liquid pipe away from the feeding pipe is connected to a waste cleaning liquid storage tank 10, and a waste liquid pump is installed on the waste liquid pipe.

[0028] The recovery unit comprises a resin collector 2, which is used to recover the waste mixed resin 3. A recovery pipe is connected between the resin collector 2 and the cavity mold 4. The resin collector 2 is connected to a vacuum pump 1, through which the waste mixed resin can be quickly recovered.

[0029] The cooling unit 18 includes a cooling tank, and a cooling pipe and a reflux pipe are respectively connected between the cooling tank and the cavity mold 4 .

[0030] When the epoxy composite flameproof enclosure molding system is used to mold the epoxy composite flameproof enclosure, the molding is completed according to the following steps:

[0031] Step 1: Laying fibers: Laying fibers in the cavity mold 4. The order of laying fibers is mesh fibers (0° / 90° Figure 2 Middle), mesh fiber (45° / 135° Figure 2 Right), 0° fiber ( Figure 2 Left), where the 0° fibers are only laid on the four side walls and not on the bottom.

[0032] Step 2: Use the hydraulic plunger 6 to drive the core mold 5 downward so that the core mold 5 and the cavity mold 4 are molded together, and then vacuum is drawn. Open the pipelines of the resin A component and the resin B component, and start the resin A component metering pump 12 and the resin B component metering pump 15. The resin A component and the resin B component flow into the mixer 11 along the resin A component storage tank 13 and the resin B component storage tank 17 respectively, and after being fully mixed in the mixer 11, they enter the mold after the core mold 5 and the cavity mold 4 are molded together along the feeding pipe.

[0033] Step 3: After the mold is filled with resin, the first heating plate 9 and the second heating plate 8 are turned on to heat and cure, and the pipelines of the resin component A and the resin component B are closed.

[0034] Step 4: Clean the mixer 11, open the cleaning liquid pipeline and the cleaning liquid feed pump 14, and use the cleaning liquid to clean the mixer 11; after the cleaning is completed, close the cleaning agent pipeline and the cleaning liquid feed pump 14.

[0035] Step 5: After curing is completed, the cooling unit 18 is opened, and the coolant cools the mold along the cooling pipe. After the product is cooled, the product-composite material shell is taken out, and the coolant flows back into the cooling tank along the reflux pipe, and then the cooling unit 18 is closed.

[0036] Step 6: After the composite shell is prepared, a layer of thermoplastic resin is injected inside it to form mounting columns or complex internal structures. In addition, a layer of metal shell is compounded on the surface of the composite shell to improve the appearance of the flameproof shell and increase the rigidity of the flameproof shell.

[0037] The excess waste mixed resin 3 will flow into the resin collector 2 under the action of the vacuum pump 1 to be collected and recycled.

[0038] The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. An epoxy composite flameproof enclosure molding system, characterized in that: It includes a mold unit and a feeding unit. The mold unit includes a cavity mold and a core mold that can move relative to the cavity mold and cooperate with the cavity mold. The bottom of the cavity mold and the bottom of the core mold are both provided with heating plates. The feeding unit includes a resin A component storage tank, a resin B component storage tank and a mixer. The resin A component storage tank and the resin B component storage tank are both connected to the mixer. A feeding pipe is connected between the mixer and the cavity mold.

2. The epoxy composite flameproof enclosure molding system according to claim 1, characterized in that: The top of the core mold is connected with a hydraulic cylinder, and the hydraulic plunger of the hydraulic cylinder is fixed on the top of the core mold.

3. The epoxy composite flameproof housing molding system according to claim 2, characterized in that: A pipeline A is connected between the resin A component storage tank and the mixer, and a pipeline B is connected between the resin B component storage tank and the mixer.

4. The epoxy composite flameproof housing molding system according to claim 3, characterized in that: The pipeline A is provided with a quantitative pump for the resin A component, and the pipeline B is provided with a quantitative pump for the resin B component.

5. The epoxy composite flameproof housing molding system according to claim 4, characterized in that: The mixer is connected with a cleaning pipe, and one end of the cleaning pipe away from the mixer is connected with a cleaning liquid storage tank.

6. The epoxy composite flameproof housing molding system according to claim 5, characterized in that: The cavity mold is connected to a cooling unit, which includes a cooling tank. A cooling pipe and a reflux pipe are respectively connected between the cooling tank and the cavity mold.

7. The epoxy composite flameproof housing molding system according to claim 6, characterized in that: The cavity mold is also connected to a recovery unit for recovering waste mixed resin.

8. The epoxy composite flameproof enclosure molding system according to claim 7, characterized in that: The recovery unit comprises a resin collector, a recovery pipe is connected between the resin collector and the cavity mold, and the resin collector is connected to a vacuum pump.

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