A method of forming a profiled rail composite box loaded with cylindrical equipment

Abstract

The application discloses a forming method of a special-shaped guide rail composite box loaded with a cylindrical equipment, and manufacturing method steps of the forming method comprise the following steps: mold preparation, material preparation, inner layer structure layer forming, glass or carbon fiber prepreg is laid on a mold according to design requirements, and pre-solidification is carried out, guide rail forming, foam material is filled into the guide rail, and the guide rail is repaired after solidification is completed, outer layer structure layer forming, glass or carbon fiber prepreg is laid on the inner layer structure layer according to design requirements, and pre-solidification is carried out, and reinforcing rib forming, glass or carbon fiber prepreg is laid on the outer layer structure layer according to design requirements, and solidification is carried out. The box body is integrally formed, the overall structure of the box body is strong, the weight is light, the manufacturing process is simple, the manufacturing cost is low, industrialized production is easy, and the box body is convenient to popularize and apply.

Description

Technical Field

[0001] This invention belongs to the field of polymer composite material technology, specifically relating to a molding method for a composite material box with irregularly shaped guide rails for loading cylindrical equipment. Background Technology

[0002] Composite material crates primarily support and protect cylindrical equipment stored within them during storage and transportation. They also require sufficient structural strength to effectively protect the equipment during transfer and hoisting. Simultaneously, to improve the overall system's mobility, the entire crate should be as lightweight as possible.

[0003] Chinese invention patent CN114311427A discloses a composite material launch box guide rail molding die and guide rail molding method, relating to the field of launch box guide rail molding. The guide rail molding die includes a lower die, an upper die, inserts, and bolt assemblies. The lower die has a guide rail cavity, and the upper die is multi-segmented. The multiple upper die segments are connected to the lower die by bolt assemblies. The pressure generated by the bolt assembly connection causes the guide rail to be molded to be pressurized and cured within the guide rail molding die cavity. Using the guide rail molding die of this invention can effectively ensure the molding dimensional accuracy, surface smoothness, and material density of the launch box guide rail, achieving high-precision, ultra-slender-to-length ratio composite material guide rail molding economically and efficiently. The guide rail molding in this invention uses a resin pre-impregnation pressure molding process, which can significantly improve production efficiency, reduce waste of auxiliary materials, and thus reduce costs. However, this process is complex and uses a large number of auxiliary materials. Summary of the Invention

[0004] To address the aforementioned problems, the present invention aims to provide a method for molding a composite material box with irregularly shaped guide rails for loading cylindrical equipment.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a molding method for a composite material box with irregularly shaped guide rails for loading cylindrical equipment, wherein the guide rail cross-section is an irregularly shaped curved surface, and the entire product is molded in one piece. The molding method includes the following steps:

[0006] Step 1: Mold preparation. Clean the mold thoroughly and repair any defects.

[0007] Step 2: Prepare materials and cut them as required;

[0008] Step 3: Inner structural layer forming. The glass or carbon fiber prepreg is laid on the mold according to the design requirements, and then pre-cured. After curing and cooling, the outer surface is cleaned.

[0009] Step 4: Guide rail forming. Fill the guide rail with foam material, and repair the guide rail after curing.

[0010] Step 5: Outer structural layer forming. The glass or carbon fiber prepreg is laid on the inner structural layer according to the design requirements, and then pre-cured. After curing and cooling, the outer surface is cleaned.

[0011] Step 6: Rib Forming: Lay glass or carbon fiber prepreg on the outer structural layer according to the design requirements, and then cure it. After curing and cooling, clean the outer surface to obtain the composite material box.

[0012] Preferably, in step 3, the inner structural layer is laid along the mold axis.

[0013] Preferably, in step 3, the laying angle used when laying the glass or carbon fiber prepreg is 0°, 90°, or ±45°.

[0014] Preferably, in step 4, the filling density of the foam material into the guide rail is 0.09–0.11 g / cm³. 3 The compressive strength is greater than 3 MPa.

[0015] Preferably, in step 2, the fiber prepreg is taken out of the freezer and thawed at least 12 hours in advance.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. The preparation process of this invention is simple, the manufacturing cost is low, it is easy to industrialize and promote its application.

[0018] 2. This invention uses an integral molding process to prepare the irregular-shaped guide rail composite material box for loading cylindrical equipment, which improves upon the shortcomings of the original multiple curing molding process for irregular-shaped guide rail composite material boxes for loading cylindrical equipment and increases production efficiency.

[0019] 3. The composite material box formed by the present invention has the characteristics of high overall strength and light weight. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the specific embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a cross-sectional view of the irregular-shaped guide rail in this invention; Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. However, it should not be construed that the scope of the subject matter of the present invention is limited to the following embodiments. All modifications, substitutions and alterations made based on ordinary technical knowledge and common practices in the art without departing from the above-described technical concept of the present invention are included within the scope of the present invention.

[0023] Reference Figure 1 A molding method for a composite material box with irregularly shaped guide rails for loading cylindrical equipment is disclosed. This method involves integral molding, ensuring a strong overall structure and light weight. The manufacturing process is simple, the manufacturing cost is low, it is easy to industrialize, and it is convenient for widespread application. Specifically, it includes the following steps:

[0024] Step 1: Mold preparation. Clean the mold with organic solvent and repair any defects to ensure that the mold surface is clean and smooth.

[0025] Step 2: Material preparation. Take the fiber prepreg out of the freezer and thaw it at least 12 hours in advance; then cut the raw materials and auxiliary materials according to the design requirements.

[0026] Step 3: Inner structural layer forming. The glass or carbon fiber prepreg is laid on the mold at 0°, 90° or ±45°, and then pre-cured at 60° and -0.1MPa. After curing and cooling, the outer surface is cleaned.

[0027] Step 4: Guide rail molding. Fill the guide rail with foam material. After curing, repair the guide rail. The density of the foam filling in the guide rail is 0.09–0.11 g / cm³. 3 The compressive strength is greater than 3 MPa;

[0028] Step 5: Outer structural layer forming: The glass or carbon fiber prepreg is laid on the inner structural layer according to the design requirements, and then pre-cured. After curing and cooling, the outer surface is cleaned.

[0029] Step 6: Rib Forming: Lay the glass or carbon fiber prepreg on the outer structural layer at 0°, 90°, or ±45°, and then cure it at 190° and 0.7MPa. After curing and cooling, clean the outer surface to obtain the composite material box.

[0030] The foregoing has provided a detailed description of the molding method for a composite material box with irregularly shaped guide rails for loading cylindrical equipment, as provided by the present invention. Specific examples have been used to illustrate the structure and working principle of the present invention. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A method for molding a composite material box with irregularly shaped guide rails for loading cylindrical equipment, characterized in that: The guide rail has an irregular curved surface cross-section, and the entire product is formed in one piece. The forming method includes the following steps: Step 1: Mold preparation. Clean the mold thoroughly and repair any defects. Step 2: Prepare materials and cut them as required; Step 3: Inner structural layer forming. The glass or carbon fiber prepreg is laid on the mold according to the design requirements. When laying the inner structural layer, it is laid along the mold axis. The laying angle used when laying the glass or carbon fiber prepreg is 0°, 90° or ±45°. Then, it is pre-cured at 60℃ and -0.1MPa. After curing and cooling, the outer surface is cleaned. Step 4: Guide rail forming. Fill the guide rail with foam material and repair it after curing. Step 5: Outer structural layer forming. Lay glass or carbon fiber prepreg on the inner structural layer according to the design requirements, and then pre-cur it. After curing and cooling, clean the outer surface. Step 6: Rib Forming: Lay glass or carbon fiber prepreg on the outer structural layer according to the design requirements, and then cure it at 190℃ and 0.7MPa. After curing and cooling, clean the outer surface to obtain the composite material box.

2. The molding method of the composite material box for loading cylindrical equipment according to claim 1, characterized in that: In step 4, the filling density of the foam material in the guide rail is 0.09 to 0.11 g / cm3, and the compressive strength is greater than 3 MPa.

3. The molding method of the composite material box for loading cylindrical equipment according to claim 1, characterized in that: In step 2, the fiber prepreg should be taken out of the freezer and thawed at least 12 hours in advance.

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