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Lightweight cable cover molding method embedded in winding shell

A molding method and cable cover technology, which are applied to household appliances, other household appliances, household components, etc., can solve the problems of poor heat insulation and erosion resistance, large negative mass, unreliable fixation of the cable cover, etc. Reduce negative mass, die design and ease of machining

Active Publication Date: 2021-08-06
湖北三江航天江北机械工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional fiber-wound engine casing usually uses aluminum alloy material to process the cable cover, and then installs it on the surface of the casing through the cable cover support embedded in the casing. This method has the advantages of simple processing and convenient operation, but there are still Large negative mass, poor heat insulation and erosion resistance, and unreliable fixing of the cable cover

Method used

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  • Lightweight cable cover molding method embedded in winding shell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The structural parameters of a certain type of lightweight cable cover embedded in the winding shell are shown in Table 1:

[0036] Table 1

[0037] serial number project Structural parameters 1 Radius of the arc surface of the inner surface 600mm 2 Hollow area cavity width 150mm 3 Hollow area cavity height 8mm 4 Cable Cover Width 300mm 5 Cable cover length 1535mm 6 The thickness of the structure layer under the foam 1.5mm 7 Thickness of foam upper structure layer 1.5mm

[0038] The lightweight cable cover molding method includes the following steps:

[0039] 1) According to the internal surface structure size of the cable cover and the length of the cable cover, the cable cover laying mold is made, and the cable cover laying mold is processed by Q235 structural steel.

[0040] 2) Add the PMI foam by machine. The transverse section of the PMI foam layer after machining is the same as the structur...

Embodiment 2

[0053] The structural parameters of a certain type of lightweight cable cover embedded in the winding shell are shown in Table 1:

[0054] Table 1

[0055] serial number project Structural parameters 1 Radius of the arc surface of the inner surface 400mm 2 Hollow area cavity width 80mm 3 Hollow area cavity height 8mm 4 Cable Cover Width 225mm 5 Cable cover length 3300mm 6 The thickness of the structure layer under the foam 1.2mm 7 Thickness of foam upper structure layer 1.2mm

[0056] The lightweight cable cover molding method includes the following steps:

[0057] 1) According to the internal surface structure size of the cable cover and the length of the cable cover, the cable cover laying mold is made, and the cable cover laying mold is processed by Q235 structural steel.

[0058] 2) Add PMI foam by machine, the transverse section of the PMI foam layer after machining is the same as the structure siz...

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Abstract

The invention discloses a forming method of a lightweight cable cover embedded in a winding shell, adding lightweight foam material by machine - calculating the number of layers of the lower layer and the upper layer, and cutting the fibers according to the section size and length of the cable cover Prepreg - Lay up the lower structural layers in the order of alternating fiber prepreg fiber directions to the required number of layers - Bond lightweight foam layers to the corresponding positions at both ends of the cable cover - Follow the fiber prepreg fiber direction Lay up the upper structural layers in an alternating sequence until the required number of layers is formed to form the cable cover prefabricated part - curing. Compared with the traditional aluminum alloy cable cover, the present invention adopts the structure of fiber prepreg layer and foam sandwich, which greatly reduces the negative quality of the cable cover under the premise of ensuring that the structural strength of the cable cover meets the requirements of use; The method of prepreg layering is simple and flexible in operation, has high process feasibility, strong practicability, and the net size of the product is formed, which reduces the processing cost.

Description

technical field [0001] The invention relates to the technical field of forming solid rocket motor shells, in particular to a forming method for a lightweight cable cover embedded in a winding shell. Background technique [0002] When the solid rocket motor is working, the electrical interface and information transmission channel are provided for the connection of each component in the missile through the cable. Due to the fast flight speed of the missile and the harsh working environment, in order to ensure the reliable operation of the cable, it needs to be protected by a cable cover . The traditional fiber-wound engine casing usually uses aluminum alloy material to process the cable cover, and then installs it on the surface of the casing through the cable cover support embedded in the casing. This method has the advantages of simple processing and convenient operation, but there are still The negative mass is large, the heat insulation and erosion resistance are poor, an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C70/34B29C70/70B29C70/22B29L31/30B29K105/20B29K105/04
CPCB29C70/228B29C70/342B29C70/70B29K2105/04B29K2105/20B29L2031/3097
Inventor 舒威晏述亮王明坤马娟
Owner 湖北三江航天江北机械工程有限公司
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