Pre-embedded molding method for large length-to-diameter ratio winding shell cable cover
A technology with a large length-to-diameter ratio and a molding method, which is applied to home appliances, other home appliances, and household components, can solve problems such as exposed cables, scrapped winding shells, and rocket launch failures, achieving load-bearing and light weight Requirements, simple embedded molding method, and short production cycle
Active Publication Date: 2019-10-29
湖北三江航天江北机械工程有限公司
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Problems solved by technology
The traditional filament-wound engine case usually adopts cable support or directly fixes the cables required for engine launch during the winding process, but there are the following problems: the cable support structure has support positioning deflection, and the fixed cable is not Disadvantages such as reliability and exposed cables; if the cable is directly pre-embedded and wound inside the housing, the cable cannot be replaced. Once the cable has quality problems or damage, the entire winding housing may be scrapped or the collected (sent) data may be missed. cause the entire rocket launch to fail
Method used
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Embodiment
[0037] The pre-embedding process of the cable cover of the first-level engine casing of a certain type of weapon system is as follows:
[0038] Structural parameters of filament winding shell and cable cover:
[0039]
[0040] 1) Make segmented cable covers according to the total length of the cable cover
[0041] Make segmented cable covers according to the total length of the cable cover, including one front segmented cable cover, one rear segmented cable cover and eight middle segmented cable covers; the manufacturing process of each segmented cable cover is: Lay multiple layers of T700 carbon fiber reinforced modified epoxy resin prepreg in the forming mold, and lay a lightweight PMI foam layer in the middle of the multi-layer T700 carbon fiber reinforced modified epoxy resin prepreg, and then pressurize and cure to form segmented cables cover; wherein, the laying angle of prepreg is arranged alternately according to +45°, 0°, -45°;
[0042] 2) Forming a large length-...
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Abstract
The invention discloses a pre-embedding forming method for a cable cover with a large-aspect-ratio winding casing. The method comprises the following steps: manufacturing segmented cable covers according to the total length of the cable cover, forming the large-aspect-ratio winding casing, splicing the segmented cable covers, winding the outer layer of the cable cover, and performing curing. The lightweight cable cover is embedded in the large-aspect-ratio winding casing, the traditional cable support and cable winding embedded scheme is replaced, rear threading and replacement of a cable arerealized, the cable is effectively protected, and reliability of the large-aspect-ratio winding casing cable can be effectively improved; the cable cover is of a prepreg layer and light foam sandwichstructure, and load bearing and light weight requirements of the cable cover are met; oordinated deformation of a rocket engine in the working process can be ensured by the structure of covering buttjoints with an elastic layer and carbon fiber cloth.
Description
technical field [0001] The invention belongs to the technical field of rocket engine casing molding, and in particular refers to a pre-embedded molding method for a winding casing cable cover with a large length-to-diameter ratio. Background technique [0002] It is one of the development goals of the rocket engine to realize the threading and replacement of the filament winding engine cable. The traditional filament wound engine case usually adopts cable support or directly fixes the cables required for engine launch during the winding process, but there are the following problems: the cable support structure has support positioning deviation, and the fixed cable is not Disadvantages such as reliability and exposed cables; if the cable is directly pre-embedded and wound inside the shell, the cable cannot be replaced. Once the cable has quality problems or damage, the entire winding shell may be scrapped or the data collected (sent) may be missed. Caused the entire rocket l...
Claims
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IPC IPC(8): B29D99/00
CPCB29D99/006
Inventor 魏虹邓德凤黄泽勇高李帅马娟
Owner 湖北三江航天江北机械工程有限公司