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Design method of extrusion molding mold of phase-compensated cable fluorinated ethylene-propylene protective jacket

A polyperfluoroethylene propylene, phase-stable cable technology, which is used in household appliances, other household appliances, household components, etc., can solve the problems of patents and articles without the design of FEP sheath extrusion molds for phase-stabilized cables, and reduce the number of The cost of human and material resources, the effect of improving stress cracking and ensuring stability

Inactive Publication Date: 2018-07-17
THE 23RD RES INST OF CHINA ELECTRONICS TECH GRP CORP
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are relatively few research reports on the influence of phase-stable cable sheaths on the stability of cable structures, and there are no patents or articles on the design of phase-stable cable FEP sheath extrusion molds

Method used

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  • Design method of extrusion molding mold of phase-compensated cable fluorinated ethylene-propylene protective jacket
  • Design method of extrusion molding mold of phase-compensated cable fluorinated ethylene-propylene protective jacket
  • Design method of extrusion molding mold of phase-compensated cable fluorinated ethylene-propylene protective jacket

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] 1. Finite element simulation design

[0028] ⑴Design of model parameters

[0029] The circular runner structures with inlet diameters of 30mm and 35mm and outlet diameters of 4.7mm and 5.08mm were established, and the melt flowed in three dimensions. Take its flow channel structure part to form figure 2 The floor plan shown. The size of the compression angle β is 38°, and the corresponding length of the forming section L is 12.3mm.

[0030] ⑵ Grid division

[0031] In the GAMBIT software, draw the runner model of the steady-phase cable extruder, draw the internal grid of the sub-runner model, and output the file as .msh format.

[0032] ⑶ simulation analysis

[0033] Open the flow field analysis software, read the grid file, and input the boundary conditions to calculate and simulate the velocity field and pressure field distribution characteristics of the flow channel.

[0034] Through calculation and analysis, under this condition, the outlet pressure and veloc...

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Abstract

The invention belongs to the technical fields of cable protective jacket extrusion molding, mold design and forming simulation, and particularly relates to a design method of an extrusion molding moldof a phase-compensated cable fluorinated ethylene-propylene protective jacket. The design method comprises the following steps that I, different extrusion molding head runner models are established in grid division software, a grid is divided, and a grid model is acquired; II, the corresponding grid model is imported in finite element simulation analysis software, boundary conditions are input, and outlet pressure and speed distribution of a plastic extruding machine are acquired through calculation; and III, the proper extrusion molding head runner model is selected according to an analog computation result, and specific parameters suitable for the mold are finally acquired. According to the design method, manpower and material resource cost of a processing experiment of the phase-compensated cable fluorinated ethylene-propylene protective jacket is greatly reduced, fastening coating of the protective jacket is achieved, bending phase position stability of a phase-compensated cable is improved, and the stress cracking problem of the cable protective jacket is effectively solved.

Description

technical field [0001] The invention relates to a method for designing a phase-stable cable polyperfluoroethylene propylene (FEP) sheath extrusion mold based on finite element technology extrusion mold design, and belongs to the technical fields of cable sheath extrusion, mold design, and molding simulation. Background technique [0002] Phase-stable cables are high-precision electronic components that can be used in engineering fields such as phased array radars, vehicle radar systems, and airborne radar systems, as signal transmission lines for the above-mentioned phase-sensitive electronic systems. The phase-stable cable has the characteristics of low loss and high phase stability. It needs to ensure good flexibility and high structural stability during design and processing. For the sheath, it requires high dimensional stability, thin thickness, and good toughness. These requirements put forward high requirements on the cable sheath extrusion process, so the parameter de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C33/38B29C47/20B29L31/34B29C48/32
CPCB29C33/3835B29L2031/3462B29C48/30B29C48/32
Inventor 吴承恳肖怀远张晶波陶世芳
Owner THE 23RD RES INST OF CHINA ELECTRONICS TECH GRP CORP
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